Question

A body is moving with uniform velocity of 2 m s­1 on a rough level surface. The frictional force on it is 10 n. If the body moves with velocity 4 m s­1 the force of friction will be:

Answer 1

Answer:

your answer !

Explanation:

Hey dear,

◆ Answer-

F2 = 20 N

◆ Explanation-

# Given-

v1 = 2 m/s

v2 = 4 m/s

F1 = 10 N

# Solution-

As we know, frictional force depends on the velocity of the moving object.

i.e. F ∝ v

Thus, here-

F1/v1 = F2/v2

F2 = F1 × v2 / v1

F2 = 10 × 4 / 2

F2 = 20 N

Therefore, frictional force is 20 N.

Hope it helps...

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Answer 2

Answer:

Brainly.in

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Secondary School Physics 5 points

A body is moving with uniform velocity of 2 m s­1 on a rough level surface. The frictional force on it is 10 N. If the body moves with velocity 4 m s­1 the force of friction will be: (a) 2.5 N (b) 5 N (c) 10 N (d) 20 N

Ask for details Follow Report by Rememberyash375 26.09.2018

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gadakhsanket

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Hey dear,

◆ Answer-

F2 = 20 N

◆ Explanation-

# Given-

v1 = 2 m/s

v2 = 4 m/s

F1 = 10 N

# Solution-

As we know, frictional force depends on the velocity of the moving object.

i.e. F ∝ v

Thus, here-

F1/v1 = F2/v2

F2 = F1 × v2 / v1

F2 = 10 × 4 / 2

F2 = 20 N

Therefore, frictional force is 20 N.

Hope it helps...